code: def strtobool(val):
      """Convert a string representation of truth to true (1) or false (0).
  
      True values are 'y', 'yes', 't', 'true', 'on', and '1'; false values
      are 'n', 'no', 'f', 'false', 'off', and '0'.  Raises ValueError if
      'val' is anything else.
      """
      val = val.lower()
      if val in ("y", "yes", "t", "true", "on", "1"):
          return 1
      elif val in ("n", "no", "f", "false", "off", "0"):
          return 0
      else:
          raise ValueError("invalid truth value {!r}".format(val))
  
imports: import importlib.util
  import os
  import re
  import string
  import subprocess
  import sys
  import sysconfig
  import functools
  from .errors import DistutilsPlatformError, DistutilsByteCompileError
  from ._modified import newer
  from .spawn import spawn
  from ._log import log
label_desc: Use image node_id 16 for calling a global function with example usage: strtobool(val) and returns: int, int